Showerhead



FIG. 1 is a perspective view of a showerhead showing our design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof; the rear elevational view being a mirror image thereof; and,

FIG. 4 is a left side elevational view thereof; the right side elevational view being a mirror image thereof.

The broken lines in the drawings represent unclaimed portions of the design and form no part thereof. 

The ornamental design for a showerhead, as shown and described. 